replikativ/datahike

Health v2 · maintenance only

Adoption not part of the score

1864 stars · 118 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Datahike is a durable, versioned Datalog database with Datomic-compatible APIs and git-like semantics, built on persistent data structures so every transaction yields an immutable, shareable snapshot. It supports time-travel queries, GDPR-compliant data excision, pluggable storage backends (file, LMDB, S3, JDBC, Redis, IndexedDB), and direct reader access to storage without a server.

Use cases

• embed a Datomic-compatible Datalog database in a Clojure application
• query historical states of a database with time travel
• store application data directly in S3 without running a database server
• build auditable data pipelines with a full transaction history
• implement GDPR-compliant data purging with a verifiable audit trail
• share immutable database snapshots between teams via a common S3 bucket
• give long-running AI agents a versioned memory substrate
• query graph-like relationships with recursive Datalog rules instead of SQL joins

When to choose

• you want Datomic-style Datalog semantics without Datomic's licensing or server requirements
• you need immutable snapshots, branching, and time-travel queries as first-class features
• you want readers to query storage (S3, filesystem) directly without a database server
• you need GDPR-compliant data excision with an audit trail
• you're building Clojure/ClojureScript apps that share one data model across JVM, Node, and browser

When to avoid

• you need heavy concurrent write throughput with centralized transaction coordination
• your team is SQL-first and Datalog's rule-based querying would be a hurdle
• you require a mature ecosystem of ORMs, admin tools, and managed hosting
• you need strict ACID guarantees across a distributed cluster with multi-master writes

Facets

library · maturity active

database search-engine vector-database serialization databases developer-tools large-language-models microservices jvm jvm-scripting browser cross-platform self-hosted datalog datomic-compatible immutable-database time-travel git-like-branching embedded-database konserve gdpr merkle-verified clojure clojurescript persistent-data-structures nodejs

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